package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.math.BigDecimal;
import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    /**
     * 获取购物车数据
     * @param shoppingCart
     * @return
     */

    List<ShoppingCart> list(ShoppingCart shoppingCart);

    /**
     * 修改菜品或套餐数量
     * @param cart
     */
    @Update("update shopping_cart set number= #{number} where id =#{id}")
    void updateNumber(ShoppingCart cart);

    /**
     * 插入购物车数据
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart (name, image, user_id, dish_id, setmeal_id, dish_flavor, number, amount, create_time) values (" +
            "#{name},#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 根据用户id清空购物车
     * @param userId
     */
    @Delete("delete from shopping_cart where user_id = #{userId}")
    void deleteByUserId(Long userId);

    /**
     * 删除购物车中一个商品
     * @param shoppingCart
     */
    void deleteDishOrSetmeal(ShoppingCart shoppingCart);


}
